Day One Ventures

Day One Ventures Management, LLC is a venture capital firm founded in 2018 and based in San Francisco, California, with an additional office in New York, New York. The firm specializes in early-stage investments, focusing on disruptive technologies across various sectors, including artificial intelligence, machine learning, fintech, healthcare, and consumer products. Day One Ventures is known for its active involvement in the growth of its portfolio companies, particularly through spearheading communications and fostering a customer-centric approach. The firm typically invests between $100,000 and $5 million, aiming to support companies from pre-seed to early Series A stages. Founded by Masha Drokova, an angel investor and communications executive, Day One Ventures emphasizes its commitment to backing innovative and impactful businesses.

Jenny Chao

Director, Communications and Investor

Past deals in Fossil fuels

Valar Atomics

Seed Round in 2025
Valar Atomics is a pioneering energy company that harnesses nuclear fission to produce synthetic gas and fuels from ambient air and water. It designs and operates modular, small-scale fission plants, aiming to provide abundant, affordable, and climate-resilient energy solutions. By untethering energy production from climate and political constraints, Valar Atomics enables various industries to leverage energy density and existing infrastructure, fostering a more sustainable and secure energy future.
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